The Output Conversion Table (Oct) - (Eview2 Oc-Table) - +Gf+ 2298 Bedienungsanleitung

Instruction manual
6.5 The output conversion table (OCT) – (EView2 OC-Table)
The output conversion table (OCT) is active if table correction is selected in parameter P40. The OCT is filled in using the EView2
software. The conversion table is usually used for volume measurement but can also be used for weight or flow measurement. This
table assigns different output values to the measured levels. The value on the left is always the measured level (relative to the zero-
level distance (P04) setting), and the value on the right is the output value for the particular level. The unit associated with the output
value is determined by the setting of the "Output source" (P01, HART - PV) and "Output units" (P02) parameters. The output value is
determined by linear interpolation between two value pairs, so the accuracy of the conversion depends on the density of the associ-
ated value pairs. After the last pair of points, the output value is calculated by linear extrapolation. The maximum number of pairs is
100.
More information:
Each new level value entered must be greater than the previous one.
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The length and volume units can be changed later on without changing the data in the table (length unit, volume unit). Take
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heed that the units in the table are always interpreted by the device according to the currently set units of measure. Therefore,
the OCT must always be filled in with values corresponding to the set units.
Caution! When using the conversion table, the setting of the current output (P10/P11) is also interpreted according to the value
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range (and measurement unit) defined on the left side of the table. Accordingly, the appropriate setting of the P10/P11 para-
meters is recommended after uploading the table.
If the conversion table is filled in incorrectly, the output (transmitted) value will not be correct either!
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A user-defined conversion table (e.g., "level - volume") can be created using EView2 as follows:
To fill in or set the output conversion (OC) table of the device, go to the "Device Settings" ➙ "OC-Table" tab in EView2. Upload or modify
the table according to "EView2 Instructions for Use" If the appropriate changes have been made in the table and it has been filled in
correctly, press the "Send" button on this page ("OC-Table" tab) on the right side under the "Get" button to download the table to the
device.
In the following example, five-point programming is presented, example: "Level - Volume" conversion
Step Action
1 In EView2, open the "Device Settings" window of the given device.
2 Go to the point called "Application" and select the unit system ("Calculation system").
3 Select a length unit (Engineering Unit).
4 Go to "Measurement configuration" and select "Measurement mode (PV source):
volume transmission" from the list.
5 Select a volume unit in the "Volume Units" section.
6 Go to "Measuring distances" and enter the tank height in the field named "Zero-level
dist." (Click on the field and enter the value).
9 Press the "Send" button in the lower right corner of the window to download the new
values to the device.
10 Go to the point called "OC-Table." Fill in the table called "OCT list" with the appropriate
values. A maximum of 100 points can be entered. Each level and volume point must
be entered. Each subsequent point must be larger than the previous one. New lines
can be created by pressing the "Ctrl + Insert" key combination or selecting "Add new
item" in the popup menu of the right mouse button. A line can be deleted by pressing
the "Ctrl + D" keys together.
11 To download the table to the device, press the "Send" button located on this page
("OC-Table" tab) on the right side under the "Get" button.
Type 2298 80 GHz Radar Level Sensor
Entered data / chosen value
Metric (EU)
m
Volume
m³
6.00 m
Wait until the download process is
complete.
See the following table (Example
for completing OCT)
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